Question

x+y=8
2x +y=13 solve using graph​

Answer 1

Answer:

so

x + y =8

2x + y = 13

now

Step-by-step explanation:

2x + y = 13

2x= 13 + y

Answer 2

Answer:

If x+y=8,

2x+y=13

Step-by-step explanation:

$x + y = 8 \\x = 8 - y \\ 2x + y = 13 \\ 2(8 - y) + y = 13 \\ 16 - 2y + y = 13 \\ - 2y + y = 13 - 16 \\ - y = - 3 \\ y = 3.......(1) \\ x + y = 8 \\ x + 3 = 8 \\ x = 8 - 3 \\ x = 5$

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